if it were drawn in the 1930 baltimore, world war ii might the been avoided -- 1930's, world war ii might have been avoided. the first gulf war might have been avoided. clear, red lines will also work with iran. earlier this year, they threatened to close the strait. the united states drew a clear, red line. iran backed off. different lines can be drawn in the i iranian nuclear program. but to be credible, a line must be drawn first and foremost in one vital part of their program -- on their efforts to enrich uranium. let me explain why. any bomb consists of an explosive material and a mechanism to ignite it. the simplest example is fuse.der in and a you light the fuse and set off the gunpowder. the gunpowder is enriched uranium in regards to iran's nuclear program. the fuse is a detonator. for iran, amassing enough uranium is far more difficult than producing a nuclear fuse. for a country like iran, it takes many, many years to enrich uranium for a bomb. that requires thousands of center fuses spinning in tandem in big industrial plants. those are green plants are visible. they are still